Table 1.

Measures and timing of data collection for stage 3 randomized controlled trial.

Outcomes		Baseline (during the third trimester)	4, 8, and 12 weeks postpartum
Demographic characteristics
	Age	✓a	N/Ab
	Education level	✓	N/A
	Marital status	✓	N/A
	Time in OATc program	✓	N/A
	Number and age of living children	✓	N/A
	Employment	✓	N/A
Baseline characteristics
	Addiction Severity Index-Lite	✓	N/A
	Maternal Antenatal Attachment Scale	✓	N/A
Outcome measures
	Addiction Severity Index-Lite	✓	✓
	Maternal Postpartum Attachment Scale	N/A	✓
	Birth Satisfaction Scale-Revised	N/A	✓
	Patient Health Questionnaire-9	N/A	✓
	Parenting Stress Index	N/A	✓
	Client Satisfaction Questionnaire-8	N/A	✓
	System Usability Scale	N/A	✓
	Length of hospital stay for newborn	N/A	✓
	Newborn hospital readmission	N/A	✓
	Breastfeeding initiation and duration	N/A	✓
	Maternal OAT continuation and relapse	N/A	✓
	Frequency of NASd tool use (weekly)	✓	✓

^aData collected.

^bN/A: not applicable.

^cOAT: opioid agonist therapy.

^dNAS: neonatal abstinence syndrome.